Originally Posted by
Drew Wiley
I've had one Thomas compressor in the shop for thirty years, and bought another for the darkroom. And they are statistically fifty times more durable than those toyish made in China abominations. A lot quieter too, and less water condensation. Unfortunately, Thomas was very poor at marketing and now no longer offers either portable compressors or service parts for extant ones. They just make specialized vacuum pumps etc. But lots of the susceptible parts are basic and interchangeable with all kinds of things. The difference with most made-in-China tools is that when something breaks you just throw it away - it ain't worth fixing.
But if you're the type who thinks you are actually going to save a buck on one of those things, a plastic Holga camera would probably appeal to you too! Cheap
compressors are generally inefficient, so to up the air output they use noisy high-RPM motors. Then to keep these quiet they baffle these in plastic (like Porter
Cable does), so the unit tend to overheat. This both greatly shortens the life of the machine and creates a lot of water buildup in the tank and lines. Instead of
a line drier of the compressor, you attach the hose to a long slanted copper pipe overhead so the moist air will and condense into a collector at the lower end
(or buy a decent compressor to begin with). The amt of water collection varies with humidity and dewpoint anyway. Regardless, you should drain your tanks everyday and have a series of inline filters, right down to submicron size before air reaches your film.
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